package com.itic.web.pay.config;

import java.security.MessageDigest;

public class MD5Util1 {
	 private static String byteArrayToHexString(byte b[]){
		  StringBuffer resultSb = new StringBuffer();
	        for (int i = 0; i < b.length; i++)
	            resultSb.append(byteToHexString(b[i]));

	        return resultSb.toString();
	 }
	   private static String byteToHexString(byte b){
		   int n = b;
	        if (n < 0)
	            n += 256;
	        int d1 = n / 16;
	        int d2 = n % 16;
	        return hexDigits[d1] + hexDigits[d2];
	   }
	   
	   public static String MD5Encode(String origin, String charsetname) {
		   String resultString = null;
		   try{
			   resultString = new String(origin);
	            MessageDigest md = MessageDigest.getInstance("MD5");
	            if (charsetname == null || "".equals(charsetname))
	                resultString = byteArrayToHexString(md.digest(resultString
	                        .getBytes()));
	            else
	                resultString = byteArrayToHexString(md.digest(resultString
	                        .getBytes(charsetname)));
		   }catch(Exception exception){
			   exception.printStackTrace();
		   }
		   return resultString;
	   }
	   private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5",
		        "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
}
